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Subject[PATCH v5 2/2] mtd: rawnand: stm32_fmc2: use FIELD_PREP/FIELD_GET macros
Date
This patch removes custom macros and uses FIELD_PREP and FIELD_GET macros.

Signed-off-by: Christophe Kerello <christophe.kerello@st.com>
Reviewed-by: Miquel Raynal <miquel.raynal@bootlin.com>
---
Changes in v5:
- rebase on top of nand/next
Changes in v3:
- add Miquel reviewed-by tag

drivers/mtd/nand/raw/stm32_fmc2_nand.c | 177 ++++++++++++++++-----------------
1 file changed, 85 insertions(+), 92 deletions(-)

diff --git a/drivers/mtd/nand/raw/stm32_fmc2_nand.c b/drivers/mtd/nand/raw/stm32_fmc2_nand.c
index 901ebd8..8f02d5e 100644
--- a/drivers/mtd/nand/raw/stm32_fmc2_nand.c
+++ b/drivers/mtd/nand/raw/stm32_fmc2_nand.c
@@ -4,6 +4,7 @@
* Author: Christophe Kerello <christophe.kerello@st.com>
*/

+#include <linux/bitfield.h>
#include <linux/clk.h>
#include <linux/dmaengine.h>
#include <linux/dma-mapping.h>
@@ -84,20 +85,16 @@
/* Register: FMC2_PCR */
#define FMC2_PCR_PWAITEN BIT(1)
#define FMC2_PCR_PBKEN BIT(2)
-#define FMC2_PCR_PWID_MASK GENMASK(5, 4)
-#define FMC2_PCR_PWID(x) (((x) & 0x3) << 4)
+#define FMC2_PCR_PWID GENMASK(5, 4)
#define FMC2_PCR_PWID_BUSWIDTH_8 0
#define FMC2_PCR_PWID_BUSWIDTH_16 1
#define FMC2_PCR_ECCEN BIT(6)
#define FMC2_PCR_ECCALG BIT(8)
-#define FMC2_PCR_TCLR_MASK GENMASK(12, 9)
-#define FMC2_PCR_TCLR(x) (((x) & 0xf) << 9)
+#define FMC2_PCR_TCLR GENMASK(12, 9)
#define FMC2_PCR_TCLR_DEFAULT 0xf
-#define FMC2_PCR_TAR_MASK GENMASK(16, 13)
-#define FMC2_PCR_TAR(x) (((x) & 0xf) << 13)
+#define FMC2_PCR_TAR GENMASK(16, 13)
#define FMC2_PCR_TAR_DEFAULT 0xf
-#define FMC2_PCR_ECCSS_MASK GENMASK(19, 17)
-#define FMC2_PCR_ECCSS(x) (((x) & 0x7) << 17)
+#define FMC2_PCR_ECCSS GENMASK(19, 17)
#define FMC2_PCR_ECCSS_512 1
#define FMC2_PCR_ECCSS_2048 3
#define FMC2_PCR_BCHECC BIT(24)
@@ -107,17 +104,17 @@
#define FMC2_SR_NWRF BIT(6)

/* Register: FMC2_PMEM */
-#define FMC2_PMEM_MEMSET(x) (((x) & 0xff) << 0)
-#define FMC2_PMEM_MEMWAIT(x) (((x) & 0xff) << 8)
-#define FMC2_PMEM_MEMHOLD(x) (((x) & 0xff) << 16)
-#define FMC2_PMEM_MEMHIZ(x) (((x) & 0xff) << 24)
+#define FMC2_PMEM_MEMSET GENMASK(7, 0)
+#define FMC2_PMEM_MEMWAIT GENMASK(15, 8)
+#define FMC2_PMEM_MEMHOLD GENMASK(23, 16)
+#define FMC2_PMEM_MEMHIZ GENMASK(31, 24)
#define FMC2_PMEM_DEFAULT 0x0a0a0a0a

/* Register: FMC2_PATT */
-#define FMC2_PATT_ATTSET(x) (((x) & 0xff) << 0)
-#define FMC2_PATT_ATTWAIT(x) (((x) & 0xff) << 8)
-#define FMC2_PATT_ATTHOLD(x) (((x) & 0xff) << 16)
-#define FMC2_PATT_ATTHIZ(x) (((x) & 0xff) << 24)
+#define FMC2_PATT_ATTSET GENMASK(7, 0)
+#define FMC2_PATT_ATTWAIT GENMASK(15, 8)
+#define FMC2_PATT_ATTHOLD GENMASK(23, 16)
+#define FMC2_PATT_ATTHIZ GENMASK(31, 24)
#define FMC2_PATT_DEFAULT 0x0a0a0a0a

/* Register: FMC2_ISR */
@@ -132,9 +129,9 @@
/* Register: FMC2_CSQCFGR1 */
#define FMC2_CSQCFGR1_CMD2EN BIT(1)
#define FMC2_CSQCFGR1_DMADEN BIT(2)
-#define FMC2_CSQCFGR1_ACYNBR(x) (((x) & 0x7) << 4)
-#define FMC2_CSQCFGR1_CMD1(x) (((x) & 0xff) << 8)
-#define FMC2_CSQCFGR1_CMD2(x) (((x) & 0xff) << 16)
+#define FMC2_CSQCFGR1_ACYNBR GENMASK(6, 4)
+#define FMC2_CSQCFGR1_CMD1 GENMASK(15, 8)
+#define FMC2_CSQCFGR1_CMD2 GENMASK(23, 16)
#define FMC2_CSQCFGR1_CMD1T BIT(24)
#define FMC2_CSQCFGR1_CMD2T BIT(25)

@@ -142,13 +139,13 @@
#define FMC2_CSQCFGR2_SQSDTEN BIT(0)
#define FMC2_CSQCFGR2_RCMD2EN BIT(1)
#define FMC2_CSQCFGR2_DMASEN BIT(2)
-#define FMC2_CSQCFGR2_RCMD1(x) (((x) & 0xff) << 8)
-#define FMC2_CSQCFGR2_RCMD2(x) (((x) & 0xff) << 16)
+#define FMC2_CSQCFGR2_RCMD1 GENMASK(15, 8)
+#define FMC2_CSQCFGR2_RCMD2 GENMASK(23, 16)
#define FMC2_CSQCFGR2_RCMD1T BIT(24)
#define FMC2_CSQCFGR2_RCMD2T BIT(25)

/* Register: FMC2_CSQCFGR3 */
-#define FMC2_CSQCFGR3_SNBR(x) (((x) & 0x1f) << 8)
+#define FMC2_CSQCFGR3_SNBR GENMASK(13, 8)
#define FMC2_CSQCFGR3_AC1T BIT(16)
#define FMC2_CSQCFGR3_AC2T BIT(17)
#define FMC2_CSQCFGR3_AC3T BIT(18)
@@ -159,15 +156,15 @@
#define FMC2_CSQCFGR3_RAC2T BIT(23)

/* Register: FMC2_CSQCAR1 */
-#define FMC2_CSQCAR1_ADDC1(x) (((x) & 0xff) << 0)
-#define FMC2_CSQCAR1_ADDC2(x) (((x) & 0xff) << 8)
-#define FMC2_CSQCAR1_ADDC3(x) (((x) & 0xff) << 16)
-#define FMC2_CSQCAR1_ADDC4(x) (((x) & 0xff) << 24)
+#define FMC2_CSQCAR1_ADDC1 GENMASK(7, 0)
+#define FMC2_CSQCAR1_ADDC2 GENMASK(15, 8)
+#define FMC2_CSQCAR1_ADDC3 GENMASK(23, 16)
+#define FMC2_CSQCAR1_ADDC4 GENMASK(31, 24)

/* Register: FMC2_CSQCAR2 */
-#define FMC2_CSQCAR2_ADDC5(x) (((x) & 0xff) << 0)
-#define FMC2_CSQCAR2_NANDCEN(x) (((x) & 0x3) << 10)
-#define FMC2_CSQCAR2_SAO(x) (((x) & 0xffff) << 16)
+#define FMC2_CSQCAR2_ADDC5 GENMASK(7, 0)
+#define FMC2_CSQCAR2_NANDCEN GENMASK(11, 10)
+#define FMC2_CSQCAR2_SAO GENMASK(31, 16)

/* Register: FMC2_CSQIER */
#define FMC2_CSQIER_TCIE BIT(0)
@@ -188,28 +185,23 @@
/* Register: FMC2_BCHDSR0 */
#define FMC2_BCHDSR0_DUE BIT(0)
#define FMC2_BCHDSR0_DEF BIT(1)
-#define FMC2_BCHDSR0_DEN_MASK GENMASK(7, 4)
-#define FMC2_BCHDSR0_DEN_SHIFT 4
+#define FMC2_BCHDSR0_DEN GENMASK(7, 4)

/* Register: FMC2_BCHDSR1 */
-#define FMC2_BCHDSR1_EBP1_MASK GENMASK(12, 0)
-#define FMC2_BCHDSR1_EBP2_MASK GENMASK(28, 16)
-#define FMC2_BCHDSR1_EBP2_SHIFT 16
+#define FMC2_BCHDSR1_EBP1 GENMASK(12, 0)
+#define FMC2_BCHDSR1_EBP2 GENMASK(28, 16)

/* Register: FMC2_BCHDSR2 */
-#define FMC2_BCHDSR2_EBP3_MASK GENMASK(12, 0)
-#define FMC2_BCHDSR2_EBP4_MASK GENMASK(28, 16)
-#define FMC2_BCHDSR2_EBP4_SHIFT 16
+#define FMC2_BCHDSR2_EBP3 GENMASK(12, 0)
+#define FMC2_BCHDSR2_EBP4 GENMASK(28, 16)

/* Register: FMC2_BCHDSR3 */
-#define FMC2_BCHDSR3_EBP5_MASK GENMASK(12, 0)
-#define FMC2_BCHDSR3_EBP6_MASK GENMASK(28, 16)
-#define FMC2_BCHDSR3_EBP6_SHIFT 16
+#define FMC2_BCHDSR3_EBP5 GENMASK(12, 0)
+#define FMC2_BCHDSR3_EBP6 GENMASK(28, 16)

/* Register: FMC2_BCHDSR4 */
-#define FMC2_BCHDSR4_EBP7_MASK GENMASK(12, 0)
-#define FMC2_BCHDSR4_EBP8_MASK GENMASK(28, 16)
-#define FMC2_BCHDSR4_EBP8_SHIFT 16
+#define FMC2_BCHDSR4_EBP7 GENMASK(12, 0)
+#define FMC2_BCHDSR4_EBP8 GENMASK(28, 16)

enum stm32_fmc2_ecc {
FMC2_ECC_HAM = 1,
@@ -289,22 +281,22 @@ static void stm32_fmc2_nfc_timings_init(struct nand_chip *chip)
u32 pmem, patt;

/* Set tclr/tar timings */
- pcr &= ~FMC2_PCR_TCLR_MASK;
- pcr |= FMC2_PCR_TCLR(timings->tclr);
- pcr &= ~FMC2_PCR_TAR_MASK;
- pcr |= FMC2_PCR_TAR(timings->tar);
+ pcr &= ~FMC2_PCR_TCLR;
+ pcr |= FIELD_PREP(FMC2_PCR_TCLR, timings->tclr);
+ pcr &= ~FMC2_PCR_TAR;
+ pcr |= FIELD_PREP(FMC2_PCR_TAR, timings->tar);

/* Set tset/twait/thold/thiz timings in common bank */
- pmem = FMC2_PMEM_MEMSET(timings->tset_mem);
- pmem |= FMC2_PMEM_MEMWAIT(timings->twait);
- pmem |= FMC2_PMEM_MEMHOLD(timings->thold_mem);
- pmem |= FMC2_PMEM_MEMHIZ(timings->thiz);
+ pmem = FIELD_PREP(FMC2_PMEM_MEMSET, timings->tset_mem);
+ pmem |= FIELD_PREP(FMC2_PMEM_MEMWAIT, timings->twait);
+ pmem |= FIELD_PREP(FMC2_PMEM_MEMHOLD, timings->thold_mem);
+ pmem |= FIELD_PREP(FMC2_PMEM_MEMHIZ, timings->thiz);

/* Set tset/twait/thold/thiz timings in attribut bank */
- patt = FMC2_PATT_ATTSET(timings->tset_att);
- patt |= FMC2_PATT_ATTWAIT(timings->twait);
- patt |= FMC2_PATT_ATTHOLD(timings->thold_att);
- patt |= FMC2_PATT_ATTHIZ(timings->thiz);
+ patt = FIELD_PREP(FMC2_PATT_ATTSET, timings->tset_att);
+ patt |= FIELD_PREP(FMC2_PATT_ATTWAIT, timings->twait);
+ patt |= FIELD_PREP(FMC2_PATT_ATTHOLD, timings->thold_att);
+ patt |= FIELD_PREP(FMC2_PATT_ATTHIZ, timings->thiz);

writel_relaxed(pcr, nfc->io_base + FMC2_PCR);
writel_relaxed(pmem, nfc->io_base + FMC2_PMEM);
@@ -327,13 +319,13 @@ static void stm32_fmc2_nfc_setup(struct nand_chip *chip)
}

/* Set buswidth */
- pcr &= ~FMC2_PCR_PWID_MASK;
+ pcr &= ~FMC2_PCR_PWID;
if (chip->options & NAND_BUSWIDTH_16)
- pcr |= FMC2_PCR_PWID(FMC2_PCR_PWID_BUSWIDTH_16);
+ pcr |= FIELD_PREP(FMC2_PCR_PWID, FMC2_PCR_PWID_BUSWIDTH_16);

/* Set ECC sector size */
- pcr &= ~FMC2_PCR_ECCSS_MASK;
- pcr |= FMC2_PCR_ECCSS(FMC2_PCR_ECCSS_512);
+ pcr &= ~FMC2_PCR_ECCSS;
+ pcr |= FIELD_PREP(FMC2_PCR_ECCSS, FMC2_PCR_ECCSS_512);

writel_relaxed(pcr, nfc->io_base + FMC2_PCR);
}
@@ -403,9 +395,9 @@ static void stm32_fmc2_nfc_set_buswidth_16(struct stm32_fmc2_nfc *nfc, bool set)
{
u32 pcr = readl_relaxed(nfc->io_base + FMC2_PCR);

- pcr &= ~FMC2_PCR_PWID_MASK;
+ pcr &= ~FMC2_PCR_PWID;
if (set)
- pcr |= FMC2_PCR_PWID(FMC2_PCR_PWID_BUSWIDTH_16);
+ pcr |= FIELD_PREP(FMC2_PCR_PWID, FMC2_PCR_PWID_BUSWIDTH_16);
writel_relaxed(pcr, nfc->io_base + FMC2_PCR);
}

@@ -659,16 +651,16 @@ static int stm32_fmc2_nfc_bch_decode(int eccsize, u8 *dat, u32 *ecc_sta)
if (unlikely(bchdsr0 & FMC2_BCHDSR0_DUE))
return -EBADMSG;

- pos[0] = bchdsr1 & FMC2_BCHDSR1_EBP1_MASK;
- pos[1] = (bchdsr1 & FMC2_BCHDSR1_EBP2_MASK) >> FMC2_BCHDSR1_EBP2_SHIFT;
- pos[2] = bchdsr2 & FMC2_BCHDSR2_EBP3_MASK;
- pos[3] = (bchdsr2 & FMC2_BCHDSR2_EBP4_MASK) >> FMC2_BCHDSR2_EBP4_SHIFT;
- pos[4] = bchdsr3 & FMC2_BCHDSR3_EBP5_MASK;
- pos[5] = (bchdsr3 & FMC2_BCHDSR3_EBP6_MASK) >> FMC2_BCHDSR3_EBP6_SHIFT;
- pos[6] = bchdsr4 & FMC2_BCHDSR4_EBP7_MASK;
- pos[7] = (bchdsr4 & FMC2_BCHDSR4_EBP8_MASK) >> FMC2_BCHDSR4_EBP8_SHIFT;
+ pos[0] = FIELD_GET(FMC2_BCHDSR1_EBP1, bchdsr1);
+ pos[1] = FIELD_GET(FMC2_BCHDSR1_EBP2, bchdsr1);
+ pos[2] = FIELD_GET(FMC2_BCHDSR2_EBP3, bchdsr2);
+ pos[3] = FIELD_GET(FMC2_BCHDSR2_EBP4, bchdsr2);
+ pos[4] = FIELD_GET(FMC2_BCHDSR3_EBP5, bchdsr3);
+ pos[5] = FIELD_GET(FMC2_BCHDSR3_EBP6, bchdsr3);
+ pos[6] = FIELD_GET(FMC2_BCHDSR4_EBP7, bchdsr4);
+ pos[7] = FIELD_GET(FMC2_BCHDSR4_EBP8, bchdsr4);

- den = (bchdsr0 & FMC2_BCHDSR0_DEN_MASK) >> FMC2_BCHDSR0_DEN_SHIFT;
+ den = FIELD_GET(FMC2_BCHDSR0_DEN, bchdsr0);
for (i = 0; i < den; i++) {
if (pos[i] < eccsize * 8) {
change_bit(pos[i], (unsigned long *)dat);
@@ -790,11 +782,11 @@ static void stm32_fmc2_nfc_rw_page_init(struct nand_chip *chip, int page,
*/
csqcfgr1 = FMC2_CSQCFGR1_DMADEN | FMC2_CSQCFGR1_CMD1T;
if (write_data)
- csqcfgr1 |= FMC2_CSQCFGR1_CMD1(NAND_CMD_SEQIN);
+ csqcfgr1 |= FIELD_PREP(FMC2_CSQCFGR1_CMD1, NAND_CMD_SEQIN);
else
- csqcfgr1 |= FMC2_CSQCFGR1_CMD1(NAND_CMD_READ0) |
+ csqcfgr1 |= FIELD_PREP(FMC2_CSQCFGR1_CMD1, NAND_CMD_READ0) |
FMC2_CSQCFGR1_CMD2EN |
- FMC2_CSQCFGR1_CMD2(NAND_CMD_READSTART) |
+ FIELD_PREP(FMC2_CSQCFGR1_CMD2, NAND_CMD_READSTART) |
FMC2_CSQCFGR1_CMD2T;

/*
@@ -804,11 +796,12 @@ static void stm32_fmc2_nfc_rw_page_init(struct nand_chip *chip, int page,
* - Set timings
*/
if (write_data)
- csqcfgr2 = FMC2_CSQCFGR2_RCMD1(NAND_CMD_RNDIN);
+ csqcfgr2 = FIELD_PREP(FMC2_CSQCFGR2_RCMD1, NAND_CMD_RNDIN);
else
- csqcfgr2 = FMC2_CSQCFGR2_RCMD1(NAND_CMD_RNDOUT) |
+ csqcfgr2 = FIELD_PREP(FMC2_CSQCFGR2_RCMD1, NAND_CMD_RNDOUT) |
FMC2_CSQCFGR2_RCMD2EN |
- FMC2_CSQCFGR2_RCMD2(NAND_CMD_RNDOUTSTART) |
+ FIELD_PREP(FMC2_CSQCFGR2_RCMD2,
+ NAND_CMD_RNDOUTSTART) |
FMC2_CSQCFGR2_RCMD1T |
FMC2_CSQCFGR2_RCMD2T;
if (!raw) {
@@ -820,7 +813,7 @@ static void stm32_fmc2_nfc_rw_page_init(struct nand_chip *chip, int page,
* - Set the number of sectors to be written
* - Set timings
*/
- csqcfgr3 = FMC2_CSQCFGR3_SNBR(chip->ecc.steps - 1);
+ csqcfgr3 = FIELD_PREP(FMC2_CSQCFGR3_SNBR, chip->ecc.steps - 1);
if (write_data) {
csqcfgr3 |= FMC2_CSQCFGR3_RAC2T;
if (chip->options & NAND_ROW_ADDR_3)
@@ -834,8 +827,8 @@ static void stm32_fmc2_nfc_rw_page_init(struct nand_chip *chip, int page,
* Byte 1 and byte 2 => column, we start at 0x0
* Byte 3 and byte 4 => page
*/
- csqar1 = FMC2_CSQCAR1_ADDC3(page);
- csqar1 |= FMC2_CSQCAR1_ADDC4(page >> 8);
+ csqar1 = FIELD_PREP(FMC2_CSQCAR1_ADDC3, page);
+ csqar1 |= FIELD_PREP(FMC2_CSQCAR1_ADDC4, page >> 8);

/*
* - Set chip enable number
@@ -843,16 +836,16 @@ static void stm32_fmc2_nfc_rw_page_init(struct nand_chip *chip, int page,
* - Calculate the number of address cycles to be issued
* - Set byte 5 of address cycle if needed
*/
- csqar2 = FMC2_CSQCAR2_NANDCEN(nfc->cs_sel);
+ csqar2 = FIELD_PREP(FMC2_CSQCAR2_NANDCEN, nfc->cs_sel);
if (chip->options & NAND_BUSWIDTH_16)
- csqar2 |= FMC2_CSQCAR2_SAO(ecc_offset >> 1);
+ csqar2 |= FIELD_PREP(FMC2_CSQCAR2_SAO, ecc_offset >> 1);
else
- csqar2 |= FMC2_CSQCAR2_SAO(ecc_offset);
+ csqar2 |= FIELD_PREP(FMC2_CSQCAR2_SAO, ecc_offset);
if (chip->options & NAND_ROW_ADDR_3) {
- csqcfgr1 |= FMC2_CSQCFGR1_ACYNBR(5);
- csqar2 |= FMC2_CSQCAR2_ADDC5(page >> 16);
+ csqcfgr1 |= FIELD_PREP(FMC2_CSQCFGR1_ACYNBR, 5);
+ csqar2 |= FIELD_PREP(FMC2_CSQCAR2_ADDC5, page >> 16);
} else {
- csqcfgr1 |= FMC2_CSQCFGR1_ACYNBR(4);
+ csqcfgr1 |= FIELD_PREP(FMC2_CSQCFGR1_ACYNBR, 4);
}

writel_relaxed(csqcfgr1, nfc->io_base + FMC2_CSQCFGR1);
@@ -1393,7 +1386,7 @@ static void stm32_fmc2_nfc_init(struct stm32_fmc2_nfc *nfc)
pcr |= FMC2_PCR_PBKEN;

/* Set buswidth to 8 bits mode for identification */
- pcr &= ~FMC2_PCR_PWID_MASK;
+ pcr &= ~FMC2_PCR_PWID;

/* ECC logic is disabled */
pcr &= ~FMC2_PCR_ECCEN;
@@ -1404,14 +1397,14 @@ static void stm32_fmc2_nfc_init(struct stm32_fmc2_nfc *nfc)
pcr &= ~FMC2_PCR_WEN;

/* Set default ECC sector size */
- pcr &= ~FMC2_PCR_ECCSS_MASK;
- pcr |= FMC2_PCR_ECCSS(FMC2_PCR_ECCSS_2048);
+ pcr &= ~FMC2_PCR_ECCSS;
+ pcr |= FIELD_PREP(FMC2_PCR_ECCSS, FMC2_PCR_ECCSS_2048);

/* Set default tclr/tar timings */
- pcr &= ~FMC2_PCR_TCLR_MASK;
- pcr |= FMC2_PCR_TCLR(FMC2_PCR_TCLR_DEFAULT);
- pcr &= ~FMC2_PCR_TAR_MASK;
- pcr |= FMC2_PCR_TAR(FMC2_PCR_TAR_DEFAULT);
+ pcr &= ~FMC2_PCR_TCLR;
+ pcr |= FIELD_PREP(FMC2_PCR_TCLR, FMC2_PCR_TCLR_DEFAULT);
+ pcr &= ~FMC2_PCR_TAR;
+ pcr |= FIELD_PREP(FMC2_PCR_TAR, FMC2_PCR_TAR_DEFAULT);

/* Enable FMC2 controller */
bcr1 |= FMC2_BCR1_FMC2EN;
--
1.9.1
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